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  • Pepso, Compadre Threshold tone...

    Try a switch that disconnects R40 to U1A pin 3 and connects a 200k resistor from U2A pin 1 to U1A pin 3. This may give you the threshold tone for ground balancing.

  • #2
    Mod schematic




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    • #3
      Or...

      What is typically done is leave the 200K there all the time and simply disconnect R40.

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